Gas-heater.



J. S. WALKER & S. N. WILCOX.

GAS HEATER.

APPLICAIIDN FILED IAN. 19. 1916.

2 SHEETS-"SHEET llNVEN TOR f5. (Gal/Fer @fi/P. (02 16% ATTORzY Patented Out. 30, 1917.

J. S. WALKER & S. N. WILCOX.

GAS HEATER.

APPLICATION FILED JAN. 19 19I6.

Patented Oct, 30, 1917.

2 SHEETSSHEET 2 I llil JIHI l ||1|- lf/ fi l! I STATES PA E i T FFICEQ JOHN s. warms Ann .srnvnsrnnn. WIIJCOX; or r rT nIIns i RENAIS W HIA:

GAS-HEATER.

' fill Improvements in GasPHeaters, of which the following is a p fication.

is i ention relatesto gas ea ers has for its object to provide-a heater o u class, inn manner ashereinef e et o t i which is simple-in itsconstrucliion and are ange en nexpe si toman fa ture, and has a combined heat retarding and retain ing element to facilitate the heating of cold air as the latter flows through the heater, including means to prevent escape of fumes or vapors into theatmosphere under such con: clitions reducing e plosions to a m nim m when the heater is used in a garageyor in proximity to explosive materials, and has an inclosecl burner: to overcome accidental burning ofthe person or ignition of matee rials near the heater and is durable, strong, eflicient, convenient in its use, and in luding means to provide a heat radiating member associated with the heat retarding and retaining element.

With the foregolng and otherobjectsin View the inventionconsists of the novel construction, combination and arrangement of parts as hereinafter more specifically tiescribed and illustrated-in theaccompanying g 1 drawing, wherein is shown an embotllment of the inventiombnt it is to be understood i that changes, variations and modifications can be resorted to which come within the scope of the claimshereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Specifieation'of Letters Patent. Patented ()gt, 3Q App ic tion filed-Jan en 19 .6- senel m. zaaae.

chamber 6 for the upward passage f the air nt ng-through he inlet-p pe i Referring to the drawings incletaill den tese y indric l shell, hav ng: a foraminous can th top and supporting l a e t he bott m. a The legs n evicle for the. low r end Qfs el l o be'ma nta nedsnaced above the supportnpon hichssitl l gs 3 are mo nte n lo d by he hell li a casing con: structed of outer and inner cylindrical mexn hers and whi h a e Vclesignated: respectively 5, he-mem 5 s spaced from thememer i o ming. t ereby n annu ar heating chamb r 6, in which is arr nged. a stationary be constructed of any suitable material. pref: V

rably, metal and. tends fromnearthe top to near he b ttom o he seitl chamber 6-; a

rranged ithin th chamber 6, below the 7 lower end of the e ment 7, is n ann l r Perorated m ta ic plate; 9-, which provides a eat tardi g member and is "positioned i.

abo e burnerv 10 arranged Within the chamber, ,6 abo e the bottom thereof. I Th hamb r 6 s cl sed at-cits top and at its bottom, and communicating with'theatnp ofsairlxchamber 6 is an. outlet pipe 1'1, the l tter extending through the shell" 1 and y ndl'ice mem er 4 end-communicateswith h chamber 6, andls employed for the dis: ha ge of apors and fumes from the lat: er. bel w the gas burner 0, is an air intake pine. atter extending through the shell 1 an Cy ndrical ember 4 andopeninginto aid ham e 6 i emp oyed for suppl ng lcleir h reto for purpose her inaie ter 'clescrib tli lunpo ecl y; the shel l, near the lower end: th re anti-e t nding int-n the chamber as e as penin ntethe burn r 19,- is a see s pply nine av ng a mixing ele: men 4 an ur ennrnv ded with n inlet pipe 15. V

The shell :1, near its, lower end: and above the burner 10 is formed With an opening receiving a door casing 17, the latter opening into the chamber 6 and by such an arrangement access can be had for any desired purpose to said chamber 6.

Connected against the periphery of the wall. 1, in any suitable manner, and surmmun cati g wi h the. chamber 55 e rounding the door casing 17, is positioned a door frame 19 secured to the shell 1. The outer face of the door frame 19 has secured thereto and entirely around the same, a length of asbestos cord 20, which is utilized to setup a seal when the door 21 is em ployed to close the outer end of the door casing 17. The door 21 is hinged in any suitable manner to the casing 19, and has its inner face provided with a groove 22 to receive the cord 20 when the door is closed; Any desirable catch for maintaining the door closed can be employed.

The shell 1 is spaced from the member 4: to form an air chamberfZ? open at its bottom, and with its upper end opening into the chamber whose upper wall is formed by the foraminous cap 2, before described. The member 5 provides an air conduit 23 for the passage of air and said conduit is open at its top and bottom;

The door casing 17 and the pipes 11 and 12 are utilized to support the members 4, 5,

1 within the shell 1. As the element 7 is connected not only tothe member 4:, but also to the D1611lb615, it maintains said members in spaced relation. If desired an additional means can be employed for supporting the members l, 5, within the shell.

The top and bottom of the chamber 6 is closed by annular plates, 24, 25 respectively, and'the upper and lower joints between the plates and th'e cylindrical members a, 5, are sealed by inclined metallic strips 26 and asbestos strips 27, these latter being interposed between the-strips 26 and members a, 5 The strips 26 and plates 24-, 25, are welded or otherwise secured to the mem bers 4, 5.

ltwill be understood that the fines 11 and 12 are arranged upon the side of the shell 1 substantially opposite the door-casing 17 and may be positioned in the directly opposite side thereof asseen in Fig. l. With the use of the perforated spiral member or baffle-plate 9, the ascending combustion-products and air are divided up into streams, portions thereof passing through the perforations insaid bafiie plate and other portions being caused to travel helically upwardly along the latter until exhausted through'the outlet flue 11, the air admitted into the chamber 6, and passing upwardly around the burner, providing for the efl'ective combustion of the gaseous products arising from the burner, and passing ciran open longitudinalhoteir passage centrally through the shell,' and a heating burner within the drum above said inlet flue and below the level of said door casing and accessible through the latter.

2. A heater comprising an open-ended outer shell, a perforated hot air outlet member for the upper end of the shell, a lower inlet and an upper outlet flue, a door casing arranged in an intermediate plane with respect to said flues, said casing and'ilues being secured through said shell and projecting inwardly thereof, a cylindrical hot-air member axially supported within saidshell and fixed upon the inner ends of said casing and lines through which cylindrical mem her the same extend communicating with the interior thereof, va tubular member axially arranged within said cylindrical member and connected therewith at the top and bottom thereof, forming an annular heating chamber, an annular ,burnergwithin said heating chamber below the level of said casing an annular perforated radiating plate above said burner in parallelism therewith lying substantially in the same horizontal plane as the said casing adapted for separating the ascending gases, and aperforated heat retarding and retaining member spirally positioned within said casing interme diate said plate and outlet flue whereby a portion of the ascending gases pass vertically therethrough and a portion thereof pass helically toward the said outlet flue.

In testimony whereof we afix. our signatures in the presence of two witnesses.

Witnesses:

LnnLLA H. SIMON, J. 5. Crown.

Uopies of this patent may be obtained for five cents each, by addressing the flommissionerof Eatents,

' Washington, 0. 

